Chislehurst Caves

Despite being called caves, these 22 miles (35 km) of tunnels are something much stranger then that, a series of entirely man-made tunnels, rooms and caverns under the south eastern suburbs of Greater London, UK. Though, there is debate over how old the caverns are, it is believed by some that they go back to the time of the Saxons -- the 400s and 500s A.D. -- some suggest they may go back 8000 years, to 6000 B.C. just after the time when the landmass of Britain was separated from the rest of Europe in 6500 B.C.



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